Information

49.5 TSI signal descriptions
The TSI module has up to 16 external pins for touch sensing. The table below itemizes all
the TSI external pins.
Table 49-1. TSI signal descriptions
Signal Description I/O
TSI_IN[15:0] TSI pins. Switchable driver that connects directly to the electrode pins
TSI[15:0] can operate as GPIO pins
I/O
49.5.1 TSI_IN[15:0]
When TSI functionality is enabled by the PEN[PEN], the TSI analog portion uses
corresponding TSICHn to connect external on-board touch capacitors. The connection
between the pin and the touch pad must be kept as short as possible to reduce distribution
capacity on board that will add to the system base capacitance.
49.6 Memory map and register definition
This section presents the touch sensing input module memory map and registers
definition.
TSI memory map
Absolute
address
(hex)
Register name
Width
(in bits)
Access Reset value
Section/
page
4004_5000 General Control and Status Register (TSI0_GENCS) 32 R/W 0000_0000h
49.6.1/
1538
4004_5004 SCAN control register (TSI0_SCANC) 32 R/W 0000_0000h
49.6.2/
1541
4004_5008 Pin enable register (TSI0_PEN) 32 R/W 0000_0000h
49.6.3/
1544
4004_500C Status Register (TSI0_STATUS) 32 w1c 0000_0000h
49.6.4/
1547
4004_5100 Counter Register (TSI0_CNTR1) 32 R 0000_0000h
49.6.5/
1550
Table continues on the next page...
TSI signal descriptions
K10 Sub-Family Reference Manual, Rev. 6, Nov 2011
1536 Freescale Semiconductor, Inc.